发明授权
- 专利标题: Magnetic recording medium
- 专利标题(中): 磁记录介质
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申请号: US918864申请日: 1997-08-26
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公开(公告)号: US6074724A公开(公告)日: 2000-06-13
- 发明人: Hiroo Inaba , Kiyomi Ejiri , Masaki Suzuki , Koji Naoe , Yuichiro Murayama , Hiroaki Takano
- 申请人: Hiroo Inaba , Kiyomi Ejiri , Masaki Suzuki , Koji Naoe , Yuichiro Murayama , Hiroaki Takano
- 申请人地址: JPX
- 专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人地址: JPX
- 优先权: JPX8-224168 19960826; JPX8-224170 19960826; JPX8-225337 19960827; JPX8-225339 19960827; JPX8-320137 19961129
- 主分类号: G11B5/702
- IPC分类号: G11B5/702 ; G11B5/706
摘要:
A magnetic recording medium is disclosed, which comprises a support having thereon a magnetic layer comprising a binder and a ferromagnetic powder dispersed therein, wherein said binder comprises a polyurethane resin having at least one cyclic hydrocarbon group and at least one ether linkage, and said ferromagnetic powder is a ferromagnetic metallic powder which comprises Fe and has a mean major-axis length of from 0.05 to 0.19 .mu.m and a crystallite size of from 100 to 230 .ANG.; and further a magnetic recording medium is disclosed, comprising a support having thereon in succession an undercoat layer comprising a binder U and an inorganic powder dispersed therein and a magnetic layer comprising a binder M and a ferromagnetic powder dispersed therein, wherein at least either of the binder U or M comprises a polyurethane resin having at least one cyclic hydrocarbon group and at least one ether linkage and said ferromagnetic powder is a ferromagnetic metallic powder which comprises Fe and has a mean major-axis length of from 0.05 to 0.19 .mu.m and a crystallite size of from 100 to 230 .ANG..
公开/授权文献
- USD298161S Faucet 公开/授权日:1988-10-18